We could not access a Gatekeeper certificate. This can occur if:
no certificates could be found on your system;
your certificate has expired; or
you hit "Cancel" when asked to select a certificate.
If you know you hold a current certificate and can see it in your certificate
store, contact Support to trouble-shoot. They can assist with other
possible causes such as:
A missing certificate chain (root and intermediate certificates); or
A proxy server on your company network interferring with SSL/TLS client
authentication.
As your browser remembers your choice of certificate, you must
close all open browser windows and restart your browser before
you can try again.
If you continue to have access problems, please contact Support.